CN108943909A - A kind of battery shell layer structure - Google Patents
A kind of battery shell layer structure Download PDFInfo
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- CN108943909A CN108943909A CN201710388539.2A CN201710388539A CN108943909A CN 108943909 A CN108943909 A CN 108943909A CN 201710388539 A CN201710388539 A CN 201710388539A CN 108943909 A CN108943909 A CN 108943909A
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- China
- Prior art keywords
- layer
- adhesion agent
- battery shell
- external protection
- internal coated
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- 239000003795 chemical substances by application Substances 0.000 claims abstract description 46
- 230000004888 barrier function Effects 0.000 claims abstract description 29
- 239000002516 radical scavenger Substances 0.000 claims abstract description 28
- 229940123457 Free radical scavenger Drugs 0.000 claims abstract description 27
- 239000011737 fluorine Substances 0.000 claims abstract description 19
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 19
- 229920000642 polymer Polymers 0.000 claims abstract description 17
- 229920000098 polyolefin Polymers 0.000 claims abstract description 17
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000010410 layer Substances 0.000 claims description 201
- -1 polyethylene Polymers 0.000 claims description 43
- 239000007789 gas Substances 0.000 claims description 29
- 239000013047 polymeric layer Substances 0.000 claims description 20
- 239000002994 raw material Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 12
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 12
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 11
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims description 10
- 239000004698 Polyethylene Substances 0.000 claims description 10
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims description 10
- 229920000573 polyethylene Polymers 0.000 claims description 10
- 239000004743 Polypropylene Substances 0.000 claims description 9
- 229920001083 polybutene Polymers 0.000 claims description 9
- 229920001155 polypropylene Polymers 0.000 claims description 9
- 150000001336 alkenes Chemical class 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 6
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 6
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 5
- 239000005977 Ethylene Substances 0.000 claims description 5
- 239000001273 butane Substances 0.000 claims description 5
- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 claims description 5
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 5
- 235000019260 propionic acid Nutrition 0.000 claims description 5
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims description 5
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 4
- 229920001577 copolymer Polymers 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 229920005672 polyolefin resin Polymers 0.000 claims description 4
- 229920005749 polyurethane resin Polymers 0.000 claims description 4
- 229920000178 Acrylic resin Polymers 0.000 claims description 3
- 239000004925 Acrylic resin Substances 0.000 claims description 3
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 229940125717 barbiturate Drugs 0.000 claims description 3
- HNYOPLTXPVRDBG-UHFFFAOYSA-N barbituric acid Chemical compound O=C1CC(=O)NC(=O)N1 HNYOPLTXPVRDBG-UHFFFAOYSA-N 0.000 claims description 3
- 235000010354 butylated hydroxytoluene Nutrition 0.000 claims description 3
- 125000001153 fluoro group Chemical group F* 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229920001225 polyester resin Polymers 0.000 claims description 3
- 239000004645 polyester resin Substances 0.000 claims description 3
- 229920001721 polyimide Polymers 0.000 claims description 3
- 239000009719 polyimide resin Substances 0.000 claims description 3
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000008096 xylene Substances 0.000 claims description 3
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 229940100630 metacresol Drugs 0.000 claims description 2
- 239000004945 silicone rubber Substances 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 150000004767 nitrides Chemical class 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 238000006116 polymerization reaction Methods 0.000 claims 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 5
- 229910001416 lithium ion Inorganic materials 0.000 abstract description 5
- 150000003254 radicals Chemical class 0.000 abstract description 3
- 239000008151 electrolyte solution Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 6
- 239000005030 aluminium foil Substances 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000007800 oxidant agent Substances 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical class OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical compound FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000002033 PVDF binder Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 description 1
- 239000004322 Butylated hydroxytoluene Substances 0.000 description 1
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000002292 Radical scavenging effect Effects 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229940095259 butylated hydroxytoluene Drugs 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- CTISCMCFPOFTKK-UHFFFAOYSA-N ethene;trifluoro-$l^{3}-chlorane Chemical group C=C.FCl(F)F CTISCMCFPOFTKK-UHFFFAOYSA-N 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920003223 poly(pyromellitimide-1,4-diphenyl ether) Polymers 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/1245—Primary casings; Jackets or wrappings characterised by the material having a layered structure characterised by the external coating on the casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/10—Batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Sealing Battery Cases Or Jackets (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of battery shell layer structures; including at least one layer of internal coated layer, the first adhesion agent layer, gas barrier layer, the second adhesion agent layer and external protection; first adhesion agent layer is formed between the internal coated layer and the gas barrier layer; the gas barrier layer is formed between first adhesion agent layer and second adhesion agent layer, and second adhesion agent layer is formed between the gas barrier layer and the external protection；The external protection includes free radical scavenger and fluorine system polymer；The internal coated layer is polyolefin layer；The external protection with a thickness of 10-50 μm；The internal coated layer with a thickness of 30-50 μm.External protection of the present invention includes free radical scavenger and fluorine system polymer, lithium ion secondary battery generated free radical in the electrolytic solution can be captured by free radical scavenger, to promote the safety of lithium ion secondary battery.
Description
Technical field
The invention belongs to battery technology fields, more particularly to a kind of battery shell layer structure.
Background technique
Lithium battery is widely used in such as laptop, mobile phone, digital still camera and electric car electronic equipment
Power supply supplies one of source, and with the influence for writing electronic equipment thin design increasingly, the slimming of battery with simplify its volume into
And the design for reducing occupied space is also gradually paid attention to, and then develops the battery shell layer knot of the composite membrane-type formed with stepped construction
Structure.
Conventional battery structure include outer housing and the anode layer being packaged in inside the outer housing, negative electrode layer, diaphragm and
Electrolyte, the diaphragm are placed between anode layer and the negative electrode layer, and the electrolyte is then to infiltrate anode layer and negative electrode layer, by
This is formed so that polyamide film coats aluminium foil layer and is constituted battery shell layer structure.
But if the battery used easily causes battery explosion when improper operation causes its temperature to overheat due to rapidly raising.
In addition, easily make to react inside it because of battery aluminium foil holes caused by external force, so generate and release oxygen, carbon dioxide or
Other gases, and battery shell layer adsorbed gas is enabled to expand, reduce the service life of the battery.
Therefore, in view of above-mentioned disadvantages, the electricity that can improve its safety and its service life how is provided
Pond shell structurre has become the problem that current industry urgently overcomes in fact.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of battery shell layer structure, external protection includes radical-scavenging
Agent and fluorine system polymer can capture lithium ion secondary battery generated free radical in the electrolytic solution by free radical scavenger,
To promote the safety of lithium ion secondary battery.
In order to solve the above technical problems, one technical scheme adopted by the invention is that: a kind of battery shell layer structure, including extremely
Few one layer of internal coated layer, the first adhesion agent layer, gas barrier layer, the second adhesion agent layer and external protection, first adhesion agent layer are formed
Between the internal coated layer and the gas barrier layer, the gas barrier layer is formed in first adhesion agent layer and second solid
Between layer, second adhesion agent layer is formed between the gas barrier layer and the external protection；
The external protection includes free radical scavenger and fluorine system polymer；
The internal coated layer is polyolefin layer；
The external protection with a thickness of 10-50 μm；
The internal coated layer with a thickness of 30-50 μm.
It further says, further includes polymeric layer, the polymeric layer is formed in the external protection and described second and connects
Between oxidant layer, the polymeric layer with a thickness of 10-50 μm.
It further says, the internal coated layer is one of following three kinds of structures:
One, one layer of structure: the internal coated layer is a strata olefin layer, and the raw material of the polyolefin layer is selected from polyethylene, gathers
Propylene, polybutene or polypenthylene；
Two, double-layer structure: the internal coated layer is the folded structure of two layers of polyolefin layer composition, the raw material of every layer of polyolefin layer
Selected from least one of polyethylene, polypropylene, polybutene and the formed group of polypenthylene；
Three, three-decker: the internal coated layer is the folded structure of three strata olefin layers composition, the raw material of every layer of polyolefin layer
Selected from least one of polyethylene, polypropylene, polybutene and the formed group of polypenthylene.
Further say, the raw material of the polymeric layer be selected from epoxy resin, acrylic resin, amido formate resin,
Silicone rubber resina, it is poly- in ring xylene resin, bimaleimide resin and the formed group of polyimide resin at least
It is a kind of.
It further says, the free radical scavenger is to provide the compound of free hydrogen, and the compound is tool
There is the aromatic ring structure compound of hydroxyl.
It further says, the free radical scavenger is selected from phenol, N, N '-two (2- naphthalene) p-phenylenediamine, 4,4 '-thiobis
(6- tertiary butyl metacresol), three (butyl cresyl) butane, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] Ji Wusi
At least one of alcohol ester, 2,6-di-tert-butyl p-cresol and barbiturates (Barbituric Acid) formed group.
It further says, first adhesion agent layer and second adhesion agent layer are all by being selected from polyurethane resin, gathering
Made by the material of ester resinae, acryl resin class or polyolefin resins, first adhesion agent layer and described second is connect
The thickness of oxidant layer be all 3-5 μm.
It further says, with the total weight of the external protection, the content of the free radical scavenger is between 0.5-
10%.
It further says, the fluorine system polymer is fluorine-containing polymer, and the raw material of the fluorine system polymer is selected from poly- fluorine
In the formed group of the copolymer of ethylene, Kynoar, polytrifluorochloroethylene, polytetrafluoroethylene (PTFE) and tetrafluoroethene and ethylene
It is at least one.
Further say, the gas barrier layer be metal layer, the gas barrier layer with a thickness of 30-50 μm.
Beneficial effects of the present invention at least have the following:
One, external protection of the invention includes free radical scavenger and fluorine system polymer, makes to make through the fluorine system polymer
For the battery shell layer structure made when generating bad products, external protection has doing over again property, and the fluorine system polymer is with more height
Dimensional stability (Dimensional Stability), moreover it is possible to improve the intensity of battery shell layer structure of the present invention, puncture,
The excellent characteristics such as barrier properties for gases (gas comprising water vapour), can be promoted then battery shell layer structure of the invention weatherability and
Durability；
Two, the free radical scavenger being added in external protection can be improved the safety of external protection.When battery is because improper
Using or occur abnormal, when the battery temperature being made rapidly to increase or overheat, free radical scavenger contained in the external protection makes
External protection can generate molten when temperature is higher than 120 DEG C, and then release free radical scavenger, be able to that explosion is occurring
Before, capture the gas released by high temperature rapidly with free radical scavenger, and then block a possibility that combustion reaction is to reduce burning,
Promote the safety of the battery.
Detailed description of the invention
Fig. 1 is one of structural schematic diagram of the invention (without polymeric layer)；
Fig. 2 is second structural representation of the invention (containing polymeric layer)；
Each section label is as follows in attached drawing:
100- internal coated layer, the first adhesion agent layer of 200-, 300- gas barrier layer, the second adhesion agent layer of 400-, 500- external protection
With 600- polymeric layer.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
Embodiment: a kind of battery shell layer structure, as shown in Figs. 1-2, including at least one layer of internal coated layer 100, the first solid
Layer 200, gas barrier layer 300, the second adhesion agent layer 400 and external protection 500, first adhesion agent layer 200 are formed in described
Between coating 100 and the gas barrier layer 300, the gas barrier layer 300 is formed in first adhesion agent layer 200 and described second and connects
Between oxidant layer 400, second adhesion agent layer 400 is formed between the gas barrier layer 300 and the external protection 500；
The external protection 500 includes free radical scavenger and fluorine system polymer；External protection can be thin for nylon polyamide
Film, polyester film (such as polycarbonate film) or Kapton.
The internal coated layer 100 is polyolefin layer；
The external protection 500 with a thickness of 10-50 μm；
The internal coated layer 100 with a thickness of 30-50 μm.
It further include polymeric layer 600, the polymeric layer 600 is formed in the external protection 500 and described second then
Between oxidant layer 400, the polymeric layer 600 with a thickness of 10-50 μm.
The internal coated layer 100 is one of following three kinds of structures:
One, one layer of structure: the internal coated layer 100 is a strata olefin layer, the raw material of the polyolefin layer be selected from polyethylene,
Polypropylene, polybutene or polypenthylene；Encapsulated layer using the flexibility and covering property of polyolefin as contact；
Two, double-layer structure: the internal coated layer 100 is the folded structure of two layers of polyolefin layer composition, every layer of polyolefin layer
Raw material is selected from least one of polyethylene, polypropylene, polybutene and the formed group of polypenthylene；
Three, three-decker: the internal coated layer 100 is the folded structure of three strata olefin layers composition, every layer of polyolefin layer
Raw material is selected from least one of polyethylene, polypropylene, polybutene and the formed group of polypenthylene.
The anti-electrolytic corrosion of internal coated layer and the protectiveness of gas barrier layer can be improved in the multilayered structure of the internal coated layer.
The raw material of the polymeric layer 600 is selected from epoxy resin, acrylic resin, amido formate resin, silicon rubber tree
Rouge gathers at least one of ring xylene resin, bimaleimide resin and the formed group of polyimide resin.
The free radical scavenger is to provide the compound of free hydrogen, and the compound is the fragrance with hydroxyl
Ring structure compound.The compound has the hydrogen that can dissociate, and to supply in conjunction with free radical, the compound is made to be changed into resonance mixing
Body or resonance compound.
The free radical scavenger is selected from phenol, N, and N '-two (2- naphthalene) p-phenylenediamine, 4,4 '-thiobis are (between 6- tertiary butyl
Cresols), three (butyl cresyl) butane, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters, 2,6- bis-
At least one of Butylated Hydroxytoluene and barbiturates (Barbituric Acid) formed group.
First adhesion agent layer 200 and second adhesion agent layer 400 are all by being selected from polyurethane resin, polyester resin
Made by the material of class, acryl resin class or polyolefin resins, first adhesion agent layer 200 and second solid
The thickness of layer 400 is all 3-5 μm.
With the total weight of the external protection, the content of the free radical scavenger is between 0.5-10%.Preferably
The content of the free radical scavenger between 2-5%, complete, and uses by the mode that the addition of free radical scavenger can pass through blending
Conventional filmmaking techniques prepare external protection.
The fluorine system polymer is fluorine-containing polymer, and the raw material of the fluorine system polymer is selected from polyvinyl fluoride
(Polyvinyl fluoride (PVF)), Kynoar (Polyvinylidene fluoride (PVDF)), poly- trifluoro chlorine
Ethylene (Polychlorotrifluorethylene (PCTFE)), polytetrafluoroethylene (PTFE) (polytetrafluorethylene,
) and at least one of tetrafluoroethene and copolymer (ETFE) formed group of ethylene PTFE.Preferably polytetrafluoroethylene (PTFE)
With the copolymer of tetrafluoroethene and ethylene.
The gas barrier layer 300 is metal layer, and more commonly used is aluminium foil layer, has the function of preferable choke antiseepage, described
Gas barrier layer 300 with a thickness of 30-50 μm.
Embodiment 1: a kind of battery shell layer structure, polypropylene film (South Asia, CXDA) conduct including using 40 μm of thickness
The internal coated layer, and on the internal coated layer with polyurethane resin (Asia electricity Cai company, model AEM-A1) formed with a thickness of 3 μm
First adhesion agent layer, use the aluminium foil layer with a thickness of 40 μm to be formed on the gas barrier layer as the gas barrier layer
With a thickness of 3 μm of second adhesion agent layer, in second adhesion agent layer, with the N containing 5%, N'- bis- (2- naphthalene) is right
Phenylenediamine (holding up chemical industry, model antioxidant D NP in day) and polyvinyl fluoride (Du Pont, PV2025) form the outer guarantor with a thickness of 25 μm
Sheath obtains battery shell layer structure shown in embodiment 1.
Embodiment 2: a kind of battery shell layer structure, including using 30 μm of thickness of polyethylene film as the internal coated layer,
And in forming first adhesion agent layer with a thickness of 5 μm on the internal coated layer with polyester resin, the aluminium with a thickness of 50 μm is used
Layers of foil forms second adhesion agent layer with a thickness of 3 μm, in described second as the gas barrier layer on the gas barrier layer
In adhesion agent layer, with four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters and polytetrafluoroethyl-ne containing 2%
The external protection that alkene is formed with a thickness of 10 μm, obtains battery shell layer structure shown in embodiment 2.
Embodiment 3: a kind of battery shell layer structure, including using 50 μm of thickness of polypenthylene film as the internal coated layer,
And in forming first adhesion agent layer with a thickness of 5 μm on the internal coated layer with polyolefin resin, using with a thickness of 30 μm
Aluminium foil layer forms second adhesion agent layer with a thickness of 5 μm as the gas barrier layer on the gas barrier layer, in described the
In two adhesion agent layers, formed with three (butyl cresyl) butane containing 3% and polytrifluorochloroethylene with a thickness of described in 50 μm
External protection obtains battery shell layer structure shown in embodiment 3.
Embodiment 4: it is identical as the preparation method of embodiment 1, the difference is that the battery shell layer structure of embodiment 4
In, further include be formed in second adhesion agent layer with a thickness of 25 μm of the polymeric layer, on the polymeric layer,
With the N containing 2%, N '-two (2- naphthalene) p-phenylenediamine (holding up chemical industry, model antioxidant D NP in day) and polyvinyl fluoride (Du Pont,
PV2025 the external protection with a thickness of 50 μm) is formed, battery shell layer structure shown in embodiment 4 is obtained.
Embodiment 5: it is identical as the preparation method of embodiment 2, the difference is that the battery shell layer structure of embodiment 5
In, further include be formed in second adhesion agent layer with a thickness of 10 μm of the polymeric layer, on the polymeric layer,
Thickness is formed with four [β-(3, the 5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters containing 3% and polytetrafluoroethylene (PTFE)
For 10 μm of the external protection, battery shell layer structure shown in embodiment 5 is obtained.
Embodiment 6: it is identical as the preparation method of embodiment 3, the difference is that the battery shell layer structure of embodiment 6
In, further include be formed in second adhesion agent layer with a thickness of 50 μm of the polymeric layer, on the polymeric layer,
The external protection with a thickness of 25 μm is formed with three (butyl cresyl) butane containing 5% and polytrifluorochloroethylene, that is, is made
Obtain battery shell layer structure shown in embodiment 6.
Comparative example 1: identical as the battery shell layer structure of embodiment 1 and preparation method, difference is only that: resulting in comparative example 1
In battery shell layer structure, each layer structure is all not added with free radical scavenger.
Comparative example 2: identical as the battery shell layer structure of embodiment 4 and preparation method, difference is only that: resulting in comparative example 2
In battery shell layer structure, each layer structure is all not added with free radical scavenger.
Battery shell layer structure obtained by above-described embodiment 1-6 and comparative example 1-2 and aluminium are rushed into shell forming using shell machine is rushed,
Constitute the shell of long 5.0cm, width 3.7cm, thickness 0.5cm, and according to 503759 model specifications, by lithium-ion electrolyte fill liquid filling and
Encapsulation forms lithium battery, by prepared battery with 4.2V electricizing activation after, then average capacitance amount measured with 0.2C discharge rate
For 1274mAh.
Puncture experiment will be carried out according to 503759 size batteries prepared by embodiment and comparative example, and by thermocouple thermometer
Edge, which is embedded in, to be punctured on experiment nail used, is carried out puncture experiment, is measured battery short circuit point temperature, and result is recorded in table 1.
Table 1
As shown in table 1, battery shell layer structure of the invention improves electricity using the external protection containing free radical scavenger
The safety in pond, and battery short circuit point temperature when puncture is reduced, not containing the external protection of free radical scavenger, then battery is short
Waypoint temperature will be greater than 500 DEG C, can not also be tested by puncturing.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure transformation made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant technical fields,
Similarly it is included within the scope of the present invention.
Claims (10)
1. a kind of battery shell layer structure, it is characterised in that: including at least one layer of internal coated layer, the first adhesion agent layer, gas barrier layer, second
Adhesion agent layer and external protection, first adhesion agent layer are formed between the internal coated layer and the gas barrier layer, the choke
Layer is formed between first adhesion agent layer and second adhesion agent layer, and second adhesion agent layer is formed in the choke
Between layer and the external protection；
The external protection includes free radical scavenger and fluorine system polymer；
The internal coated layer is polyolefin layer；
The external protection with a thickness of 10-50 μm；
The internal coated layer with a thickness of 30-50 μm.
2. a kind of battery shell layer structure according to claim 1, it is characterised in that: it further include polymeric layer, the polymerization
Nitride layer is formed between the external protection and second adhesion agent layer, the polymeric layer with a thickness of 10-50 μm.
3. a kind of battery shell layer structure according to claim 1, it is characterised in that: the internal coated layer is following three kinds of structures
One of:
One, one layer of structure: the internal coated layer is a strata olefin layer, the raw material of the polyolefin layer be selected from polyethylene, polypropylene,
Polybutene or polypenthylene；
Two, double-layer structure: the internal coated layer is the folded structure of two layers of polyolefin layer composition, and the raw material of every layer of polyolefin layer is selected from
At least one of polyethylene, polypropylene, polybutene and the formed group of polypenthylene；
Three, three-decker: the internal coated layer is the folded structure of three strata olefin layers composition, and the raw material of every layer of polyolefin layer is selected from
At least one of polyethylene, polypropylene, polybutene and the formed group of polypenthylene.
4. a kind of battery shell layer structure according to claim 1, it is characterised in that: the raw material of the polymeric layer is selected from ring
Oxygen resin, amido formate resin, silicone rubber resina, gathers to ring xylene resin, bimaleimide resin acrylic resin
At least one of with the formed group of polyimide resin.
5. a kind of battery shell layer structure according to claim 1, it is characterised in that: the free radical scavenger is to mention
For the compound of free hydrogen, the compound is the aromatic ring structure compound with hydroxyl.
6. a kind of battery shell layer structure according to claim 1, it is characterised in that: the free radical scavenger be selected from phenol,
N, N '-two (2- naphthalene) p-phenylenediamine, 4,4 '-thiobis (6- tertiary butyl metacresol), three (butyl cresyl) butane, four [β-
(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester, 2,6-di-tert-butyl p-cresol and barbiturates
At least one of (Barbituric Acid) formed group.
7. a kind of battery shell layer structure according to claim 1, it is characterised in that: first adhesion agent layer and described
Two adhesion agent layers all by selected from polyurethane resin, polyester resin, acryl resin class or polyolefin resins material institute
It is made, the thickness of first adhesion agent layer and second adhesion agent layer is all 3-5 μm.
8. a kind of battery shell layer structure according to claim 1, it is characterised in that: with the total weight of the external protection
Meter, the content of the free radical scavenger is between 0.5-10%.
9. a kind of battery shell layer structure according to claim 1, it is characterised in that: the fluorine system polymer is fluorine-containing gathers
Object is closed, the raw material of the fluorine system polymer is selected from polyvinyl fluoride, Kynoar, polytrifluorochloroethylene, polytetrafluoroethylene (PTFE) and four
At least one of formed group of the copolymer of vinyl fluoride and ethylene.
10. a kind of battery shell layer structure according to claim 1, it is characterised in that: the gas barrier layer is metal layer, described
Gas barrier layer with a thickness of 30-50 μm.
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| CN202651216U (en) * | 2012-06-05 | 2013-01-02 | 昆山雅森电子材料科技有限公司 | Battery shell structure with shielding effect |
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| CN102867925A (en) * | 2011-07-07 | 2013-01-09 | 昆山雅森电子材料科技有限公司 | Cell shell structure |
| CN202651216U (en) * | 2012-06-05 | 2013-01-02 | 昆山雅森电子材料科技有限公司 | Battery shell structure with shielding effect |
| CN106159122A (en) * | 2015-05-15 | 2016-11-23 | 昆山雅森电子材料科技有限公司 | Battery Shell Structure |
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Application publication date: 20181207 |